<!DOCTYPE HTML>
<html lang="en" >
    
    <head>
        
        <meta charset="UTF-8">
        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
        <title>常用的css选择器 | 爬虫</title>
        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
        <meta name="description" content="">
        <meta name="generator" content="GitBook 2.6.7">
        
        
        <meta name="HandheldFriendly" content="true"/>
        <meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
        <meta name="apple-mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-status-bar-style" content="black">
        <link rel="apple-touch-icon-precomposed" sizes="152x152" href="../gitbook/images/apple-touch-icon-precomposed-152.png">
        <link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
        
    <link rel="stylesheet" href="../gitbook/style.css">
    
        
        <link rel="stylesheet" href="../gitbook/plugins/gitbook-plugin-highlight/website.css">
        
    
        
        <link rel="stylesheet" href="../gitbook/plugins/gitbook-plugin-search/search.css">
        
    
        
        <link rel="stylesheet" href="../gitbook/plugins/gitbook-plugin-fontsettings/website.css">
        
    
    

        
    
    
    <link rel="next" href="../BeautifulSoup/BeautifulSoup4的各种例子.html" />
    
    
    <link rel="prev" href="../BeautifulSoup/BeautifulSoup.html" />
    

        
    </head>
    <body>
        
        
    <div class="book"
        data-level="4.1"
        data-chapter-title="常用的css选择器"
        data-filepath="BeautifulSoup/常用的css选择器.md"
        data-basepath=".."
        data-revision="Fri Oct 19 2018 08:44:08 GMT+0800 (中国标准时间)"
        data-innerlanguage="">
    

<div class="book-summary">
    <nav role="navigation">
        <ul class="summary">
            
            
            
            

            

            
    
        <li class="chapter " data-level="0" data-path="index.html">
            
                
                    <a href="../index.html">
                
                        <i class="fa fa-check"></i>
                        
                        序言
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1" data-path="认识爬虫/introduceSpider.html">
            
                
                    <a href="../认识爬虫/introduceSpider.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.</b>
                        
                        认识爬虫
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.1" data-path="认识爬虫/http.html">
            
                
                    <a href="../认识爬虫/http.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.1.</b>
                        
                        HTTP
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1.2" data-path="认识爬虫/Requests.html">
            
                
                    <a href="../认识爬虫/Requests.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.2.</b>
                        
                        requests
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="1.3" data-path="认识爬虫/初步爬虫.html">
            
                
                    <a href="../认识爬虫/初步爬虫.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>1.3.</b>
                        
                        初步爬虫小项目
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="2" data-path="正则表达式/正则表达式.html">
            
                
                    <a href="../正则表达式/正则表达式.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.</b>
                        
                        正则表达式
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="2.1" data-path="正则表达式/正则表达式练习.html">
            
                
                    <a href="../正则表达式/正则表达式练习.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.1.</b>
                        
                        正则表达式练习
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.2" data-path="正则表达式/正则表达式之后的第一个项目.html">
            
                
                    <a href="../正则表达式/正则表达式之后的第一个项目.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.2.</b>
                        
                        正则表达式之后的第一个项目
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.3" data-path="正则表达式/正则表达式常用表.html">
            
                
                    <a href="../正则表达式/正则表达式常用表.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.3.</b>
                        
                        正则表达式常用表
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.4" data-path="正则表达式/正则表达式重点1.html">
            
                
                    <a href="../正则表达式/正则表达式重点1.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.4.</b>
                        
                        正则表达式重点
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.5" data-path="正则表达式/正则表达式常问问题.html">
            
                
                    <a href="../正则表达式/正则表达式常问问题.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.5.</b>
                        
                        正则表达式常问问题
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="2.6" data-path="正则表达式/正则爬虫练习.html">
            
                
                    <a href="../正则表达式/正则爬虫练习.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>2.6.</b>
                        
                        正则爬虫项目练习
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3" data-path="XPATH/xpath-in.html">
            
                
                    <a href="../XPATH/xpath-in.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.</b>
                        
                        XPATH
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.1" data-path="XPATH/Xpath.html">
            
                
                    <a href="../XPATH/Xpath.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.1.</b>
                        
                        XPATH认识
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.2" data-path="XPATH/Xpath的代码例子.html">
            
                
                    <a href="../XPATH/Xpath的代码例子.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.2.</b>
                        
                        XPATH的代码例子
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="3.3" data-path="XPATH/xpath的爬虫练习.html">
            
                
                    <a href="../XPATH/xpath的爬虫练习.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>3.3.</b>
                        
                        XPATH的爬虫练习
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="4" data-path="BeautifulSoup/BeautifulSoup.html">
            
                
                    <a href="../BeautifulSoup/BeautifulSoup.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.</b>
                        
                        BeautifulSoup
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter active" data-level="4.1" data-path="BeautifulSoup/常用的css选择器.html">
            
                
                    <a href="../BeautifulSoup/常用的css选择器.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.1.</b>
                        
                        常用的css选择器
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="4.2" data-path="BeautifulSoup/BeautifulSoup4的各种例子.html">
            
                
                    <a href="../BeautifulSoup/BeautifulSoup4的各种例子.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>4.2.</b>
                        
                        BeautifulSoup4的各种例子
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="5" data-path="代理/proxy.html">
            
                
                    <a href="../代理/proxy.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>5.</b>
                        
                        ip代理池项目
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="6" data-path="Selenium/Selenium.html">
            
                
                    <a href="../Selenium/Selenium.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>6.</b>
                        
                        Selenium
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7" data-path="进程线程协程/introduce.html">
            
                
                    <a href="../进程线程协程/introduce.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.</b>
                        
                        进程线程协程
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="7.1" data-path="进程线程协程/gevent.html">
            
                
                    <a href="../进程线程协程/gevent.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.1.</b>
                        
                        gevent
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7.2" data-path="进程线程协程/green_let.html">
            
                
                    <a href="../进程线程协程/green_let.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.2.</b>
                        
                        green_let
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7.3" data-path="进程线程协程/yield.html">
            
                
                    <a href="../进程线程协程/yield.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.3.</b>
                        
                        yield
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7.4" data-path="进程线程协程/multiprecessing.html">
            
                
                    <a href="../进程线程协程/multiprecessing.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.4.</b>
                        
                        multiprecessing
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="7.5" data-path="进程线程协程/threading.html">
            
                
                    <a href="../进程线程协程/threading.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>7.5.</b>
                        
                        threading
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="8" data-path="scrapy框架/scrapy.html">
            
                
                    <a href="../scrapy框架/scrapy.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>8.</b>
                        
                        Scrapy
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="8.1" data-path="scrapy框架/scrapy_setting.html">
            
                
                    <a href="../scrapy框架/scrapy_setting.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>8.1.</b>
                        
                        scrapy_setting
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="8.2" data-path="scrapy框架/模块作用.html">
            
                
                    <a href="../scrapy框架/模块作用.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>8.2.</b>
                        
                        模块作用
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="8.3" data-path="scrapy框架/19个中间件.html">
            
                
                    <a href="../scrapy框架/19个中间件.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>8.3.</b>
                        
                        19个中间件
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="9" data-path="scrapy-redis分布式/scrapy-redis.html">
            
                
                    <a href="../scrapy-redis分布式/scrapy-redis.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>9.</b>
                        
                        scrapy-redis分布式
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="9.1" data-path="scrapy-redis分布式/scrapy-redis的改造方法.html">
            
                
                    <a href="../scrapy-redis分布式/scrapy-redis的改造方法.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>9.1.</b>
                        
                        scrapy-redis的改造方法
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="10" data-path="spider_projects/introduce.html">
            
                
                    <a href="../spider_projects/introduce.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.</b>
                        
                        spider_projects
                    </a>
            
            
            <ul class="articles">
                
    
        <li class="chapter " data-level="10.1" data-path="spider_projects/使用代理在普通爬虫脚本下.html">
            
                
                    <a href="../spider_projects/使用代理在普通爬虫脚本下.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.1.</b>
                        
                        使用代理在普通爬虫脚本下
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.2" data-path="spider_projects/xpath爬取前程无忧的数据.html">
            
                
                    <a href="../spider_projects/xpath爬取前程无忧的数据.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.2.</b>
                        
                        xpath爬取前程无忧的数据
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.3" data-path="spider_projects/存储数据库的脚本.html">
            
                
                    <a href="../spider_projects/存储数据库的脚本.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.3.</b>
                        
                        存储数据库的脚本
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.4" data-path="spider_projects/weibo.html">
            
                
                    <a href="../spider_projects/weibo.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.4.</b>
                        
                        爬取央视新闻微博
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.5" data-path="spider_projects/weibo2.html">
            
                
                    <a href="../spider_projects/weibo2.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.5.</b>
                        
                        爬取明星的微博
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.6" data-path="spider_projects/liepin.html">
            
                
                    <a href="../spider_projects/liepin.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.6.</b>
                        
                        爬取猎聘的职位信息Crawl
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.7" data-path="spider_projects/zhilianRe.html">
            
                
                    <a href="../spider_projects/zhilianRe.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.7.</b>
                        
                        纯正则爬取智联的职位信息
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.8" data-path="spider_projects/setting.html">
            
                
                    <a href="../spider_projects/setting.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.8.</b>
                        
                        scrapy中的setting
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.9" data-path="spider_projects/items.html">
            
                
                    <a href="../spider_projects/items.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.9.</b>
                        
                        scrapy中的items
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.10" data-path="spider_projects/pipeline.html">
            
                
                    <a href="../spider_projects/pipeline.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.10.</b>
                        
                        scrapy中的pipeline
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.11" data-path="spider_projects/middlewares.html">
            
                
                    <a href="../spider_projects/middlewares.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.11.</b>
                        
                        scrapy中的middlewares
                    </a>
            
            
        </li>
    
        <li class="chapter " data-level="10.12" data-path="spider_projects/框架中的代码运行脚本.html">
            
                
                    <a href="../spider_projects/框架中的代码运行脚本.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>10.12.</b>
                        
                        框架中的代码运行脚本
                    </a>
            
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="11" data-path="爬虫的面试题/面试题1-10.html">
            
                
                    <a href="../爬虫的面试题/面试题1-10.html">
                
                        <i class="fa fa-check"></i>
                        
                            <b>11.</b>
                        
                        爬虫面试题
                    </a>
            
            
        </li>
    


            
            <li class="divider"></li>
            <li>
                <a href="https://www.gitbook.com" target="blank" class="gitbook-link">
                    Published with GitBook
                </a>
            </li>
            
        </ul>
    </nav>
</div>

    <div class="book-body">
        <div class="body-inner">
            <div class="book-header" role="navigation">
    <!-- Actions Left -->
    

    <!-- Title -->
    <h1>
        <i class="fa fa-circle-o-notch fa-spin"></i>
        <a href="../" >爬虫</a>
    </h1>
</div>

            <div class="page-wrapper" tabindex="-1" role="main">
                <div class="page-inner">
                
                
                    <section class="normal" id="section-">
                    
                        <h1 id="&#x5E38;&#x7528;&#x7684;css&#x9009;&#x62E9;&#x5668;">&#x5E38;&#x7528;&#x7684;css&#x9009;&#x62E9;&#x5668;</h1>
<table>
<thead>
<tr>
<th>&#x9009;&#x62E9;&#x5668;</th>
<th>&#x4F8B;&#x5B50;</th>
<th>&#x4F8B;&#x5B50;&#x63CF;&#x8FF0;</th>
<th>CSS</th>
</tr>
</thead>
<tbody>
<tr>
<td>.<em>class</em></td>
<td>.intro</td>
<td>&#x9009;&#x62E9; class=&quot;intro&quot; &#x7684;&#x6240;&#x6709;&#x5143;&#x7D20;&#x3002;</td>
<td>1</td>
</tr>
<tr>
<td>#<em>id</em></td>
<td>#firstname</td>
<td>&#x9009;&#x62E9; id=&quot;firstname&quot; &#x7684;&#x6240;&#x6709;&#x5143;&#x7D20;&#x3002;</td>
<td>1</td>
</tr>
<tr>
<td>*</td>
<td>*</td>
<td>&#x9009;&#x62E9;&#x6240;&#x6709;&#x5143;&#x7D20;&#x3002;</td>
<td>2</td>
</tr>
<tr>
<td><em>element</em></td>
<td>p</td>
<td>&#x9009;&#x62E9;&#x6240;&#x6709; <p> &#x5143;&#x7D20;&#x3002;</p></td>
<td>1</td>
</tr>
<tr>
<td><em>element</em>,<em>element</em></td>
<td>div,p</td>
<td>&#x9009;&#x62E9;&#x6240;&#x6709; <div> &#x5143;&#x7D20;&#x548C;&#x6240;&#x6709; <p> &#x5143;&#x7D20;&#x3002;</p></div></td>
<td>1</td>
</tr>
<tr>
<td><em>element</em> <em>element</em></td>
<td>div p</td>
<td>&#x9009;&#x62E9; <div> &#x5143;&#x7D20;&#x5185;&#x90E8;&#x7684;&#x6240;&#x6709; <p> &#x5143;&#x7D20;&#x3002;</p></div></td>
<td>1</td>
</tr>
<tr>
<td><em>element</em>&gt;<em>element</em></td>
<td>div&gt;p</td>
<td>&#x9009;&#x62E9;&#x7236;&#x5143;&#x7D20;&#x4E3A; <div> &#x5143;&#x7D20;&#x7684;&#x6240;&#x6709; <p> &#x5143;&#x7D20;&#x3002;</p></div></td>
<td>2</td>
</tr>
<tr>
<td><em>element</em>+<em>element</em></td>
<td>div+p</td>
<td>&#x9009;&#x62E9;&#x7D27;&#x63A5;&#x5728; <div> &#x5143;&#x7D20;&#x4E4B;&#x540E;&#x7684;&#x6240;&#x6709; <p> &#x5143;&#x7D20;&#x3002;</p></div></td>
<td>2</td>
</tr>
<tr>
<td>[<em>attribute</em>]</td>
<td>[target]</td>
<td>&#x9009;&#x62E9;&#x5E26;&#x6709; target &#x5C5E;&#x6027;&#x6240;&#x6709;&#x5143;&#x7D20;&#x3002;</td>
<td>2</td>
</tr>
<tr>
<td>[<em>attribute</em>=<em>value</em>]</td>
<td>[target=_blank]</td>
<td>&#x9009;&#x62E9; target=&quot;_blank&quot; &#x7684;&#x6240;&#x6709;&#x5143;&#x7D20;&#x3002;</td>
<td>2</td>
</tr>
<tr>
<td>[<em>attribute</em>~=<em>value</em>]</td>
<td>[title~=flower]</td>
<td>&#x9009;&#x62E9; title &#x5C5E;&#x6027;&#x5305;&#x542B;&#x5355;&#x8BCD; &quot;flower&quot; &#x7684;&#x6240;&#x6709;&#x5143;&#x7D20;&#x3002;</td>
<td>2</td>
</tr>
<tr>
<td>[<em>attribute</em>\</td>
<td>=<em>value</em>]</td>
<td>[lang\</td>
<td>=en]</td>
<td>&#x9009;&#x62E9; lang &#x5C5E;&#x6027;&#x503C;&#x4EE5; &quot;en&quot; &#x5F00;&#x5934;&#x7684;&#x6240;&#x6709;&#x5143;&#x7D20;&#x3002;</td>
<td>2</td>
</tr>
<tr>
<td><a href="http://www.w3school.com.cn/cssref/selector_nth-of-type.asp" target="_blank">:nth-of-type(<em>n</em>)</a></td>
<td>p:nth-of-type(2)</td>
<td>&#x9009;&#x62E9;&#x5C5E;&#x4E8E;&#x5176;&#x7236;&#x5143;&#x7D20;&#x7B2C;&#x4E8C;&#x4E2A; <p> &#x5143;&#x7D20;&#x7684;&#x6BCF;&#x4E2A; </p><p> &#x5143;&#x7D20;&#x3002;</p></td>
<td>3</td>
</tr>
</tbody>
</table>

                    
                    </section>
                
                
                </div>
            </div>
        </div>

        
        <a href="../BeautifulSoup/BeautifulSoup.html" class="navigation navigation-prev " aria-label="Previous page: BeautifulSoup"><i class="fa fa-angle-left"></i></a>
        
        
        <a href="../BeautifulSoup/BeautifulSoup4的各种例子.html" class="navigation navigation-next " aria-label="Next page: BeautifulSoup4的各种例子"><i class="fa fa-angle-right"></i></a>
        
    </div>
</div>

        
<script src="../gitbook/app.js"></script>

    
    <script src="../gitbook/plugins/gitbook-plugin-search/lunr.min.js"></script>
    

    
    <script src="../gitbook/plugins/gitbook-plugin-search/search.js"></script>
    

    
    <script src="../gitbook/plugins/gitbook-plugin-sharing/buttons.js"></script>
    

    
    <script src="../gitbook/plugins/gitbook-plugin-fontsettings/buttons.js"></script>
    

<script>
require(["gitbook"], function(gitbook) {
    var config = {"highlight":{},"search":{"maxIndexSize":1000000},"sharing":{"facebook":true,"twitter":true,"google":false,"weibo":false,"instapaper":false,"vk":false,"all":["facebook","google","twitter","weibo","instapaper"]},"fontsettings":{"theme":"white","family":"sans","size":2}};
    gitbook.start(config);
});
</script>

        
    </body>
    
</html>
